Anti-falling plastic jacket

The utility model discloses an anti-falling plastic coat which comprises a coat body, a turnup ring is arranged on the upper portion of the coat body, the coat body and the turnup ring are of an integrally-formed structural design, first reinforcing ribs are arranged on the front side and the rear side of the inner side of the coat body, and second reinforcing ribs are arranged on the left side and the right side of the inner side of the coat body. The first reinforcing rib and the second reinforcing rib are arranged in the pipe body direction of the outer sleeve body, a protruding block is arranged on the upper portion of the first reinforcing rib, a transition slope is arranged at the joint of the first reinforcing rib and the protruding block, and the first reinforcing rib, the protruding block and the second reinforcing rib are all integrally formed with the outer sleeve body in a pouring mode. The structure of the jacket body is reinforced through the first reinforcing ribs and the reinforcing sleeve, th